allylic intermediates

Carbanions, carbenium ions or radicals, formally derived by detachment of one hydron, hydride or hydrogen from the CH3 group of propene or derivatives thereof. E.g. H2C=CHCH2+ allyl cation.
PAC, 1995, 67, 1307 (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1315